Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 182039
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
239 PM CST Tue Feb 18 2025

For waters within five nautical miles of shore on Lake Michigan

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.

LMZ740>742-190415-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
239 PM CST Tue Feb 18 2025

.TONIGHT...Northwest winds 10 to 20 kt. Mostly cloudy. Waves 1
to 2 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Intermittent flurries
in the afternoon. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 kt. Intermittent
flurries. Waves 1 to 2 ft.
.THURSDAY...Northwest winds 15 to 20 kt. Partly cloudy. Waves
2 to 4 ft.

Wave heights are for ice free areas.

$$

LMZ743>745-190415-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
239 PM CST Tue Feb 18 2025

.TONIGHT...Northwest winds 10 to 20 kt. Isolated snow showers.
Waves 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Slight chance of snow
showers in the morning, then intermittent flurries in the
afternoon. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 kt. Intermittent
flurries. Waves 2 to 4 ft.
.THURSDAY...Northwest winds 15 to 25 kt. Slight chance of snow.
Waves 3 to 5 ft.

Wave heights are for ice free areas.

$$